Abondance faible
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Abond. moyenne
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Abondance forte
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0.31 NUPHAR LUTEUM SM. 5-6
0.33 MYRIOPHYLLUM VERTICILLA 1-6
0.35 POTAMOGETON LUCENS L. 1-6
0.36 MYRIOPHYLLUM SPICATUM L 1-6
0.38 CERATOPHYLLUM DEMERSUM 1-6
0.39 POTAMOGETON NATANS L. 1-6
0.41 RANUNCULUS CIRCINATUS S 1-6
0.41 SAGITTARIA SAGITTIFOLIA 1-6
0.42 NYMPHAEA ALBA L. 1-6
0.43 HELODEA CANADENSIS RICH 1-6
0.43 HOTTONIA PALUSTRIS L. 1-6
0.45 POTAMOGETON PECTINATUS 1-6
0.46 POTAMOGETON PUSILLUS L. 1-6
0.46 SPARGANIUM SIMPLEX HUDS 1-6
0.47 POTAMOGETON CRISPUS L. 1-6
0.48 HIPPURIS VULGARIS L. 1-6
0.48 RANUNCULUS CIRCINATUS S 3-6
0.48 POTAMOGETON PERFOLIATUS 1-6
0.48 HIPPURIS VULGARIS L. 3-6
0.49 MYRIOPHYLLUM VERTICILLA 4-6
0.49 HYDROCHARIS MORSUS-RANA 1-6
0.49 SAGITTARIA SAGITTIFOLIA 3-6
0.50 POTAMOGETON LUCENS L. 4-6
0.50 NAIAS MAJOR ALL. 1-6
0.50 HELODEA CANADENSIS RICH 4-6
0.52 LEMNA TRISULCA L. 1-6
0.53 MYRIOPHYLLUM SPICATUM L 4-6
0.53 POTAMOGETON NATANS L. 5-6
0.53 HOTTONIA PALUSTRIS L. 3-6
0.53 UTRICULARIA VULGARIS L. 1-6
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